Process for forming driving-blocks upon multiple-wire cables.



A. DOXFORD.

PROCESS FOR FORMING DRIVING BLOCKS UPON MULTIPLE WIRE CABLES.

' APPLICATION FILED -IAN.10, 1911. 1,059,1 24.

Patented Apr. 15, 1913.

4 SHEETS-SHEET 1.

A. DOXFORD.

PROCESS FOR FORMING DRIVING BLOCKS UPON MULTIPLE WIRE GABLES.

- AP PLIQATION FILED JAN. 10. 1911. 1,059,124.

Patented Apr. 15, 1913.

4 SHEETSSHEET 2.

WITNESSES VING BLOCKS UPON- MULTIP LE WIRE CABLES.

v PROCESS FOR FORMING DRI APP LIOATION FILED JAN. 10, 1911. v Patented Apr. 15, 1913.

4 snnEws-annm 3.

I QMUQYSWWW w;

A. DOXFORD.

PROCESS FOR FORMING DRIVING BLOCKS UPON MULTIPLE WIRE CABLES.

APPLICATION FILED JAN. 10, 1911.,

Patented Apr. 15, 1913. I 4 SHEETS-SHEET 4.

'WITNESlQES @ai w Q%. A).

anrnun'noxromi, or SUNDERLAND, ENGLAND.

PROCESS FOR FORMING DRIVING-BLOCKS UPON MULTIPLE-WIRE CABLES.

Specification of Letters Patent.

Patented Apr. 15, 1913.

. Application filed January 10, 1911. Serial No. 601,901.

To all whom, 'it may concern:

Be it known that I, ARTHUR Doxronn, a subject of the King of England, residing at Sunderland, Durham, England, have invented certain new and useful Processes for Forming Driving- Blocks. upon Multiple- V ire Cables, of which the following is a specification.

This invention is for improvements in or relating to conveyors wherein the carrying trays are attached to and propelled by multiple-wire cablesandhas particular reference to the means whereby driving connection is effected between the cables and such carrying trays.

The term carrying trays will be understood throughout the specification and claims to mean any plates or other devices whereby the material to be conveyed is moved forward.

As is well known the trays are usually secured to the chains or cables by fastening means which pass through the links of the chains or surround and grip the cables, or

they are connected to driving-blocks formed upon the cable by casting metal around the latter. In some cases it has been proposed to open out the portions of the cable where:

on the blocks are to be formed with a spike and pour the molten metal into and around such opened-out portion. I

The present invention primarily relates to a process for the formation of drivingblocks upon a multiple-wire cable, consisting in (a) twisting that part of the cable to which the block is to be applied, in a direction contrary to its lay, and thereby producing a permanent bird-ca ing of the wires that is sulticient to allow ree passage of the metal among the wires, (6) placing a mold around such open part, and (c) filling the mold with molten metal. As stated, the untivisting of the cable is such that a permanent bird-caging or opening-out of the .wvircs or strands is obtained.

It has been before proposed to untwist a wire cable to allow a length of hempcn core to be removed prior to casting a block on it but the untwisting was not such as to obtain permanent bird-caging and recourse had to be had to a' spike to drive and hold the strands apart during the pouring of the metal.

Other features of the invention relate to the attachment of divided casings to the blocks in a particularly rigid and eflicient manner.

The invention is particularly adapted for use in connection with a multiple-wire cable in which every wire is wound in one and the same direction, one on top of the other, as it the finished cable were intended to form a strand only of a larger cable; obviously the invention may also be used in connection W1tl1 other forms of cable.

ing secured over the block; Fig. 6 shows two ends of a cable laced together prior to forming a block oFdiflerent. form from that shown in Fig. 4; Fig. 7 shows the block formed on a cable where the ends are arranged as in Fig. 6; Fig. 8 is a perspective view of a modified construction of mold or casing; Fig. 9 shows in .elevat-ionan end View of one of the trays mounted on the ca bles and side rails; Fig. 10 is a half plan of a completed portion of a' conveyer; Fig. 11 is a section through the same on the line 1111 of Fig. 10; and Fig. 19. is a side elevation showing the looped end of a conveyer in engagement with one of its driving sprockets.

Like letters indicate like parts throughout the drawings.

In Figs. 9, 10 and11, the cables A are shown as having trays X secured to them so that as the cables are'drawn along in any well known manner, the trays move with them carrying the material thatit is desired to convey, and the present invention relates to the method of securing these trays or their equivalents to the cables A.

In Fig. 1, a portion of the cable is shown whereof a part A has been bird-caged or opened out by twisting it in a direction contrary to its lay.

from sliding lengthwise along the cable when subjected to stress tending to cause such movement. To form a block on the ca-' ble whereby the trays may be fastened to the latter, the portion B of the mold is placed beneath the cable and the portion B over it, one or more packing pieces B being laid between the two parts; The mold portion B has in it a pouring orifice B and when the parts are in position, molten metal such as white metal is poured in and allowed to set so that a block A (Fig. 4) is-formed on the cable, the metal whereof not only adheres to the exterior of the cable but has penetrated between all the. wires and thus s securely held in place. The mold B B conveniently serves also as a casing that is finally secured permanently to the block, the part B being uppermost when the cable is in use, and having an eye or bearing-lug B whereby the trays may be attached.

' Fig. 5 shows the mold portions secured to gether by rivets B and before riveting, the packing piece B is removed so that the two halves of the casing are forcibly brought together and thereby made to securely grip the block that is inclosed by them. Any

number of these blocks may be formed on the cables, according to the number of trays the conveyer is intended to carry and each tray conveniently has secured at one end, a bar or axle X of L-shaped cross-section but whose ends are journaled to pass through the eyes B of the blocks. The journaled ends project through the eyes B of the blocks and on the projecting portions are mounted flanged wheels or rollers X which run upon rails Y that are provided for them as is common practice with conveyers. That end of each tray remote from the end carrying the axle X laps over the neighboring tray and is provided with a depending tongue X that lies under the neighboring tray so that in this manner they are all articulated together. s

In some cases, one of the blocks A may be used to connect two loose ends of a cable in addition to serving the purpose of a driving block:

Fig. 6- shows two end portions of a cable.

"case the-block, when cast, will be,approximately the same in shape as the block A It will be readily understood that any shape block may be formed by using a mold whose interior, has the shape it is desired that the block" shall take, and whether the mold and casing are separate elements or whether thecasing also serves the purpose of the mold, the casing is always so shaped that its interior corresponds to the shape of the block and it can thus easily be fastened rigidly to the same while its exterior is so shaped as to enable the trays to be connected to it, as by the eye B.

In some cases it may be preferred to form the casing in one piece instead of dividing it, but for this to admit the cable. Such a casing B is shown in Fig. 8 and it will be seen that the opening B extends from the center of the block out to one side so that the cable can be easily slipped into position. When the.

teeth Z of end sprockets Z (Fig. 12). The

teeth Z are grooved at Z to receive the cables A as will be readily understood and asv the blocks lie between the teeth the sprocket can impart a positive drive to the cables by means of the blocks.

What I claim as my invention and desire to secure by Letters Patent is 1. The herein described process of forming a driving-block upon a multiple-wire purpose one side must be open it cable at a point other than the end thereof,

consisting in (a) twisting that part of the cable to which the block is to be applied, in a direction contrary to its lay and thereby producing a permanent bird-ca ing of the wires that is sufiicient to a low free passage of the metal among the wires, (1)) "placin a mold around such opened part, and (c filling the mold with molten metal.

2.. The herein described method of forming driving-blocks upon a multiple-wire cable which consists in opening out a portion of the cable, surrounding the open portion with a casing composed of two sections, inserting packing material between the meet ing surfaces of the two sections,'filling the casing with molten metal and allowing the molten metal to set hard.

3. The herein described method of forming driving blocks upon a multiple-wire cable which consists in opening out a portion of the cable, surrounding the opened portion with a casing composed of two sections, inserting packin material. between the meeting surfaces 0 the two mold sections, filling the mold with molten metal, 3

multiple-wire cable by casting metal around it, consisting in applyin to such block a divided casin that'is sma ler'than the block, and forcibly rawing the parts of the casing together on the block.

5. In'" the formation of a driving-block I upon a multiple-wirecable by casting metal around it the process, consisting in -(a) opening out the wires of a portion of the cable by twisting it in a direction contrary to its lay, (b) p acing around such openedout portion a divided casing having removable distance pieces between the parts, (a) pouring. molten; metal into the casing and among the wires, and (d) removing the dis- I tance pieces and drawing together the parts of the casing on to theblock."

6. The herein described method of forming driving-blocks upon a multiple-wire cable at a point other than the end thereof and whereof all the wires are twisted to ether in one direction so that when untwiste the each become individually separated, whic consists in separating all the wires at a portion of the cable by twisting it in the reverse direction to the lay of the wires, and casting metal on and among the separated wires.

In testimony whereof I have signed my name-to this specificationin the presence of two subscribing witnesses.

v ARTHUR DOXFORD. Witnesses H. NIXON,

FRED. ,H. DUKE. 

